61
6.1 General
Your boat is equipped with 120 volt AC and 12
volt DC electrical systems. The AC system can
draw current from one of two sources, either shore
power outlets at dockside or the generator. The
DC system draws current from onboard batteries.
Your boat and engine charging system is designed
for 12 volt marine batteries. All wires in the elec-
trical systems are color coded to make identify-
ing circuits easier. Wiring schematics have been
included with this manual.
6.2 DC System Overview
The 12 volt system is a fairly standard marine
system. There are eight batteries, one for each
engine and four for the house, generator and elec-
tronics. If your boat is equipped an the optional
bow thruster, there will be an additional battery
dedicated to that system. The House and optional
thruster batteries are connected to the engine
auxiliary charging circuits.
The batteries are located in the compartment
below the rear facing bench seat base and in the
aft systems compartment. Quad engine battery
systems are controlled by five battery switches,
one for each engine and one for the house 12 volt
accessories, generator and electronics. The bat-
teries are charged by the engines or the battery
chargers when connected to shore power or when
the generator is operating.
Most 12 volt power is distributed to the 12 volt
accessories through individual circuit breakers and
fuses located in panels near the engine batteries,
behind an access panel above the galley in the
cabin, and in the hardtop and upper helm sta-
tion. All circuit breakers or fuses are labeled with
the name of the circuit they protect. Main circuit
breakers near the batteries protect the primary
circuits for the DC main, electronics, windlass
and other accessory circuits. Additional fuses in
panels near the engine batteries protect continu-
ous power circuits for the automatic switches for
bilge pumps and high water alarm, and the remote
battery switches. 12 volt accessories are oper-
ated by switches in the helm switch panels, digi-
tal switches in the Garmin displays, cabin switch
panels or optional upper helm switch panel. Most
accessory circuits are protected by circuit breakers
in the digital switch control modules and fuses in
panels near the control modules.
Main breakers or fuses located on each engine pro-
tect the ignition systems and gauge panel display.
Other main, heavy duty fuses or circuit breakers in
the aft systems compartment protect the primary
engine control circuits on boats equipped Yamaha
engines and Helm Master controls.
Yamaha engine electrical circuits are protected
by fuses located in a fuse panel on the side of
the engine. The engine fuse panels are equipped
with a spare fuse for each circuit. Always replace
fuses used with the fuse specified by the engine
manufacturer. Refer to the engine owner’s manual
for more information on the fuses, fuse panels or
circuit breakers on your engines.
CAUTION
PROPER FUSE OR BREAKER PROTECTION MUST BE
PROVIDED FOR ALL 12 VOLT EQUIPMENT ADDED. DO
NOT OVERLOAD THE ACCESSORY CIRCUIT BREAKERS
OR OTHER CIRCUITRY THROUGH ADDITIONAL 12 VOLT
EQUIPMENT.
Chapter 6:
ELECTRICAL SYSTEM
Systems Compartment, Main Circuit Breakers
& Continuous Power Fuse Panels
Summary of Contents for 455 CC
Page 1: ...OWNER S MANUAL 455 CC...
Page 2: ...2 Revision 0 12 04 2021...
Page 14: ...14 NOTES...
Page 26: ...26 NOTES...
Page 29: ...29 Operation...
Page 96: ...96 Electrical System NOTES...
Page 108: ...108 NOTES...
Page 120: ...120 NOTES...
Page 158: ...158 NOTES...
Page 177: ...177 MAINTENANCE LOG Appendix B Hours Date Dealer Service Repairs...
Page 178: ...178 Maintenance Schedule and Log MAINTENANCE LOG Hours Date Dealer Service Repairs...
Page 179: ...179 Maintenance Schedule and Log MAINTENANCE LOG Hours Date Dealer Service Repairs...
Page 180: ...180 Maintenance Schedule and Log MAINTENANCE LOG Hours Date Dealer Service Repairs...
Page 181: ...181 Appendix C BOATING ACCIDENT REPORT...
Page 182: ...182 Boating Accident Report...
Page 183: ...183 Boating Accident Report...
Page 184: ...184 NOTES...
Page 186: ...186 NOTES...
Page 195: ...195 Schematics Board Circuit Breaker DCM AFT BOM...
Page 196: ...196 Schematics Board Circuit Breaker DCM Forward Console Sht 1...
Page 197: ...197 Schematics Board Circuit Breaker DCM Hardtop 2nd Station...
Page 198: ...198 Schematics add sheet 3 that shows the shipping height...
Page 199: ...CAUSE AND SOLUTION...